Kakuna

Chen, Xiang-Sheng & Yang, Lin, 2010, Oriental bamboo delphacid planthoppers: three new species of genus Kakuna Matsumura (Hemiptera: Fulgoromorpha: Delphacidae) from Guizhou Province, China, Zootaxa 2344, pp. 29-38 : 31

Key to species of genus Kakuna (male)

1. Anal segment of male with processes ( Figs 16, 17, 19 ); two processes of diaphragm very long, separated basally ( Figs 19, 20 ); aedeagus in profile straight, without any process ( Fig. 21 ); genital style in profile with apex subquadrate, apical margin truncate ( Fig. 22 ) ......................................................................................... K. nonspinata sp. nov.

- Anal segment of male without process ( Figs 5 , 28, 30 ); two processes of diaphragm relatively short, both touching at base or with a common stalk basally ( Figs 6 , 31 ); aedeagus in profile curving dorsally, apical half with spine-like processes ( Figs 8, 9 , 32, 33 ); genital style tapering apically ( Figs 10, 11 , 34 ) ............................................................ 2

2. Aedeagus with two rows teeth along apical half of lateral margin ( Figs 32, 33 ); inner margin of genital style with a nipple-like process medially ( Figs 30, 34 ) ............................................................................... K. zhongtuana sp. nov.

- Aedeagus with several spine-like processes at apical part dorsally or ventrally ( Figs 8, 9 ); genital style without process ( Figs 10, 11 ) ......................................................................................................................................................... 3

3. Ventral margin of anal segment produced ventrally; pygofer in profile with laterodorsal angle not produced caudad; processes of diaphragm short; aedeagus not expanded at apex, apical part with five pairs of spine-like processes laterally; genital styles relatively broad and short ........................................................................... K. yushaniae (Yang)

- Ventral margin of anal segment not produced ventrally ( Fig. 5 ); pygofer in profile with laterodorsal angle strongly produced caudad ( Fig. 4 ); processes of diaphragm long ( Fig. 6 ); aedeagus in profile distinctly expanded at apex, apical part with six spine-like processes ( Fig. 8 ); genital styles relatively slender and long ( Figs 5, 10, 11 ) .................. 4

4. Processes of diaphragm straight; aedeagus with three spine-like processes both dorsally and ventrally; suspensorium with stalk longer in middle line than broad ......................................................................... K. kuwayamai Matsumura

- Processes of diaphragm with apex curving laterad ( Fig. 6 ); aedeagus with six spine-like processes apically on dorsal margin ( Fig. 8 ); suspensorium with stalk shorter in middle line than broad ( Fig. 7 ) ............................. K. lii sp. nov.

Figures

FIGURES 12 – 22. Kakuna nonspina sp. nov. (12) Head and thorax, dorsal view; (13) Frons and clypeus; (14) Forewing (3); (15) Hindwing; (16) Male anal segment, ventral view; (17) Male anal segment, lateral view; (18) Male genital segment, lateral view; (19) Male genital segment, posterior view; (20) Diaphragm; (21) Aedeagus, lateral view; (22) Left genital style, lateral view. Scale bars = 0.5 mm (Figs 12 – 13, 18 – 19); 2.0 mm (Figs 14 – 15); 0.2 mm (Figs 16 – 17, 20 – 22).

FIGURES 1 – 11. Kakuna lii sp. nov. (1) Head and thorax, dorsal view; (2) Frons and clypeus; (3) Forewing (3); (4) Male genital segment, lateral view; (5) Male genital segment, posterior view; (6) Pygofer, posterior view; (7) Suspensorium; (8) Aedeagus and suspensorium, lateral view; (9) Aedeagus, ventral view; (10) Right genital style, lateral view; (11) Right genital style, posterior view. Scale bars = 0.5 mm (Figs 1 – 2, 4 – 6); 2.0 mm (Fig. 3); 0.2 mm (Figs 7 – 11).

FIGURES 23 – 34. Kakuna zhongtuana sp. nov. (23) Head and thorax, dorsal view; (24) Frons and clypeus; (25) Forewing (3); (26) Forewing (Ƥ); (27) Hindwing; (28) Male anal segment, lateral view; (29) Male genital segment, lateral view; (30) Male genital segment, posterior view; (31) Diaphragm; (32) Aedeagus, ventral view; (33) Aedeagus, lateral view; (34) Left genital style, lateral view. Scale bars = 1.0 mm (Figs 23 – 24); 2.0 mm (Figs 25 – 27); 0.3 mm (Figs 29 – 30); 0.2 mm (Figs 28, 31 – 34).